Mold-scraper.



C. H. HORTON.

' mow scRAPER.

APPUCATION FILED DEC-23, i915- Patente Deo. A26, 1916.

mr mums psu-ns uA uamunun WASHING run. u c

y corresponding y UNITED srn'rns PAT union.

vCHARLES kI-I. HORTON, OF PAINESVILLE, OHIO.

MoLn-scaAPnn.

` Original application filed March 19, 1915, Serial No. 15,547. Divided and this specification of Letters raient. i

Patented nee. 2e, 191e.

application led December 23, 1915. y Serial No. 68,404.

To all "whom t may concern;

` Be it known that l, CHARLES H. HonroN,

a citizen of the United States, residing at ,1)ainesville, lin the county of Lake and State of Uhio, have invented new and useful Improvements in Mold-Scrapers, of which the followingy is a specification.'

This application is a Vdivision of my cop'ending application for patent on brick machines, Serial No. 15,547, filed March 19, 1915.

f This invention relates to improvements in mold` scrapers, proposing ,a mechanism' which is specially designed to act on a continuous chain of molds and which reliably removes surplus clayfrom the molds.

The principal objects ofthe invention are to Provide a mechanism, as Stated, which reliably and certainly removes surplus clay from the molds and smooths on? or levels the exposed faces of the bricks; in which the tial plan view thereof; and Fig. 3 is an end elevation thereof. n

Similar characters of reference designate parts throughout the several views. l

In the embodiment disclosed, itis assumed that the molds M are arranged in a continuous chain and are movable intermittently in a direction at right anglestothe direction of movement of the Scrapers 1.

The mold carrier and the means for intermittently operating the carrier are not illustrated, since these elements are notparts of the present invention, and in so far as the mold scraping mechanism is concerned, may be of vany suitable construction for the purposes in view. It is noted, however, that a mold carrier and an operating means therefor adapted to the embodiment of mold scraping mechanism disclosed, is fully illustrated and described in ymy co-pending application referred to.

The Scrapers 1 are formed of thin` metaly plates and have obliquely disposed working edges to produce a shearing action. The Scrapers, of which two arranged end 'to endk are" employed in the embodiment shown for vaction simultaneously upon two adjoining molds, are movable lengthwise ofthe molds' but crosswise of the train of molds, ypreferably by an endless carrier including parallel sprocket chains 2. The chains 2 are trained over pairs of sprocket wheels 3 and 4 and are driven by the application of power to the shaft of one of the pairs of sprocket wheels, preferably the shaft 'of the sprocket rwheels 3.

The Scrapers 1 project fromk collars 6 'which are mounted for lengthwise adjustment on a bar 7 extendingbetween and supported from the chains 2, the bar 7 being r0- tatable in its bearings. The positionsofthe scrapers'with reference to the bar 7 as a pivotal axis are controlled by arms 8 projecting from said bar at a suitable angle to the scrapers and co-acting with cam rails 9 and l0. The arms 8 havek friction rollers l1 which engage said rails. The rails 9 each include a curved portion 9a concentric to the sprocket wheels e and a straight portion 9b projectingtoward the sprocket wheels 3 fork a distance approximately equal/tothe length l of each mold. The rails 9 control the action of the Scrapers upon the molds, causing them to assume operative positions in horizontal or substantially horizontal planes `wherein their scraping edges work uniformlythroughout the width of each mold to remove surplus clay from the topsfof'the molds.

The operation of the scraperswill best be understood by reference to Fig. 1. After the Scrapers pass beyond the molds and the arms 8 disengage the rails 9, the Scrapers drop by gravity with reference to the-fbar 7 as a pivotal axis into' a substantially perpendicular position, asshown by the kdotted lines A, and thereafter in the course of the movement' of the chains 2 strike against fiXed transverse yblades" 12, one for each scraper, the function of which is to remove from the yscraper-s the clay which the Scrapers have previously removed from the tops of the molds, the clay thus scraped` from the scrapers by the blades 12 being recovered in anyy suitable manner and being returned to the pug mill for reworking.

The scrapers ride over the blades 12 as shown by the dotted lines B, and as soon as they have passed said blades again drop into perpendicular positions, as' sho-wn by the dotted lines C. Thereafter, their arms 8 engage the rails 10 which are curved concentrically to the sprockets 3 and which, during the movement of lthe scrapers through the curved path described by said sprockets, cause the scrapers to assume such positions, as shown at D, that when the Scrapers pass beyond the upper sides of the sprockets 3 they rest by gravity upon the chains 2, as shown at E, in such positions that the arms 8 may engage the curved portions 9ZL of therails 9 in the course of the movement of the Scrapers through the path described by the sprockets 1, the rails 9 causing the Scrapers to assume their operative positions F. r)The straight portions 9b of the rails 9 are provided with laterally opening channels 9C in which engage the friction rollers 11 of the arms 8, the office of these channels being to cooperate with said friction rollers in positively holding` the scrapers 1 in their proper working positions and to insure that the edges of the Scrapers will bear with the requisite pressure against the upper surfaces of the molds through the movement of the scrapers across the Y molds.

y number' of pairs of molds which pass under the chains during each cycle of movement thereof.

As shown, the rails Y9 and 10 are supported from brackets 13, which may be suitably secured to the machine frame, (not shown) and which also carry the bearings for the shafts of the sprocket wheels 3 and 4:. The bar whichcarries the blades 12 may be supported by brackets 1A which are connected to the rails 9.

Having fully described my invention, I claim- 1. A mold scraping mechanism comprisingmovable chains traveling in a horizontal path, scraping blades carried by said chains Von their pivotal axes to pass said means.

2. 'A mold scraping mechanism comprising movable endless chains, blades having scraping edges, bars supported by and eX- tending transversely between the chains and upon which the blades are mounted, arms projecting from the bars, and rails which ,engage said arms during periods of their movement to regulate the angular disposition of the blades. y

3. A mold, scraping mechanism comprising movable endless chains, blades having scraping edges, bars supported by and eX-,

tending between the chains and upon which the blades are mounted, arms projecting from the bars, a. fixed scraper which is engaged by the blades subsequent tothe operation thereof and which removes clay there- Y from, rails which are engaged by said arms to positively and operatively position the blades during a period of the movement of said chains, said rails having upwardly directed curved portions at their outer ends,y and other rails distant from said iirstnamed rails and located beyond said scraper, said last-named rails conforming inY curvature to the arc through which the chains travel beyond said scraper and also being engaged by said arms whereby to regulate the angular disposition of the blades during their movement from the lower to the upper run of said chains, the blades resting on said chains throughout the upper run thereof.y i Y A. A mold scraping mechanism comprising blades having scraping edges, a carrier therefor, and means engaging said blades during a period of the movement of said carrier for removing clay therefrom.

ln testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

CHAR-LES H. HORTON.

Witnesses FRANK L. KERRL INA M. STORY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

